DE60227152D1 - Direct conversion receiver and method - Google Patents

Direct conversion receiver and method

Info

Publication number
DE60227152D1
DE60227152D1 DE60227152T DE60227152T DE60227152D1 DE 60227152 D1 DE60227152 D1 DE 60227152D1 DE 60227152 T DE60227152 T DE 60227152T DE 60227152 T DE60227152 T DE 60227152T DE 60227152 D1 DE60227152 D1 DE 60227152D1
Authority
DE
Germany
Prior art keywords
signal
distortion products
direct conversion
rejection
conversion receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60227152T
Other languages
German (de)
Inventor
Louis Vannatta
Daniel Haub
John Solar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Mobility LLC
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE60227152D1 publication Critical patent/DE60227152D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

A method in a radio communication device having a receiver receiving a wideband signal in the presence of narrowband blockers method in direct conversion and intermediate frequency RF receivers including determining power for signal distortion products (40), determining power for a desired signal and the distortion products (41), filtering the signal distortion products with a filter having a bandwidth of rejection, and dynamically adjusting a rejection property (43) as a function of the power for both the desired signal and the signal distortion products. In some embodiments, a determination is made whether a ratio of powers exceeds a threshold (45) as a condition for adjusting the rejection property. <IMAGE>
DE60227152T 2001-12-20 2002-12-16 Direct conversion receiver and method Expired - Lifetime DE60227152D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/033,999 US6959170B2 (en) 2001-12-20 2001-12-20 Communications receivers and methods therefor

Publications (1)

Publication Number Publication Date
DE60227152D1 true DE60227152D1 (en) 2008-07-31

Family

ID=21873697

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60227152T Expired - Lifetime DE60227152D1 (en) 2001-12-20 2002-12-16 Direct conversion receiver and method

Country Status (6)

Country Link
US (1) US6959170B2 (en)
EP (1) EP1339166B1 (en)
CN (1) CN100440740C (en)
AT (1) ATE398855T1 (en)
DE (1) DE60227152D1 (en)
TW (1) TWI303523B (en)

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US6807405B1 (en) 1999-04-28 2004-10-19 Isco International, Inc. Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference
US7324616B2 (en) * 2004-03-01 2008-01-29 Motorola, Inc. Low cost and high performance narrowband interference cancellation system
US7525942B2 (en) * 2005-09-01 2009-04-28 Isco International, Inc. Method and apparatus for detecting interference using correlation
JP2008042765A (en) * 2006-08-09 2008-02-21 Sharp Corp Receiving system
US7593491B1 (en) * 2006-10-03 2009-09-22 Rf Micro Devices, Inc. Quadrature single-mixer multi-mode radio frequency receiver
US8385483B2 (en) 2008-11-11 2013-02-26 Isco International, Llc Self-adaptive digital RF bandpass and bandstop filter architecture
US9048919B2 (en) 2008-11-11 2015-06-02 Isco International Llc Method and apparatus for an adaptive filter architecture
US20110081243A1 (en) * 2009-10-02 2011-04-07 Sullivan John T Helical airfoil wind turbines
US8542751B2 (en) * 2010-08-20 2013-09-24 Intel Corporation Techniques for identifying and reducing block artifacts
US9319916B2 (en) 2013-03-15 2016-04-19 Isco International, Llc Method and appartus for signal interference processing
US9800277B2 (en) 2013-10-11 2017-10-24 Motorola Solutions, Inc. Interference detection and mitigation in radio frequency receivers
US9668223B2 (en) 2014-05-05 2017-05-30 Isco International, Llc Method and apparatus for increasing performance of communication links of communication nodes
WO2016178778A1 (en) 2015-05-04 2016-11-10 Isco International, Llc Method and apparatus for increasing performance of communication paths for communication nodes
CA3024175C (en) 2016-06-01 2024-06-11 Isco International, Llc Method and apparatus for performing signal conditioning to mitigate interference detected in a communication system
US10298279B2 (en) 2017-04-05 2019-05-21 Isco International, Llc Method and apparatus for increasing performance of communication paths for communication nodes
US10812121B2 (en) 2017-08-09 2020-10-20 Isco International, Llc Method and apparatus for detecting and analyzing passive intermodulation interference in a communication system
US10284313B2 (en) 2017-08-09 2019-05-07 Isco International, Llc Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system

Family Cites Families (21)

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US5179730A (en) 1990-03-23 1993-01-12 Rockwell International Corporation Selectivity system for a direct conversion receiver
US5507036A (en) 1994-09-30 1996-04-09 Rockwell International Apparatus with distortion cancelling feed forward signal
US5579347A (en) 1994-12-28 1996-11-26 Telefonaktiebolaget Lm Ericsson Digitally compensated direct conversion receiver
FI950106A (en) * 1995-01-10 1996-07-11 Nokia Mobile Phones Ltd Procedure and coupling for filtering interference in radio receiver receivers
JP3073687B2 (en) 1996-02-09 2000-08-07 松下電器産業株式会社 Direct conversion receiver with cut-off frequency switching means in filter
US6029058A (en) * 1996-07-19 2000-02-22 The Board Of Trustee Of The Leland Stanford Junior University Spectrum control for direct conversion radio frequency reception
US6178314B1 (en) 1997-06-27 2001-01-23 Visteon Global Technologies, Inc. Radio receiver with adaptive bandwidth controls at intermediate frequency and audio frequency sections
US6047171A (en) 1998-01-08 2000-04-04 Ericsson Inc. Method and apparatus for combating adjacent channel interference using multiple IF filters
US6192225B1 (en) * 1998-04-22 2001-02-20 Ericsson Inc. Direct conversion receiver
US6125272A (en) 1998-09-25 2000-09-26 Motorola, Inc. Method and apparatus providing improved intermodulation distortion protection
US6205334B1 (en) * 1998-11-24 2001-03-20 Ericsson Inc. Accelerated scanning of cellular channels by cellular radiotelephones
DE69829757T2 (en) * 1998-12-18 2006-01-12 Sony International (Europe) Gmbh Three-gate circuit receiver
JP4308955B2 (en) * 1999-01-20 2009-08-05 パナソニック株式会社 Filter device and filter coefficient acquisition method thereof
US6683919B1 (en) * 1999-06-16 2004-01-27 National Semiconductor Corporation Method and apparatus for noise bandwidth reduction in wireless communication signal reception
US6463266B1 (en) * 1999-08-10 2002-10-08 Broadcom Corporation Radio frequency control for communications systems
US6574462B1 (en) * 1999-08-25 2003-06-03 Analog Devices, Inc. Local oscillator apparatus for radio frequency communication systems
US6516183B1 (en) * 1999-09-10 2003-02-04 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for disturbance compensation of a direct conversion receiver in a full duplex transceiver
US6603826B1 (en) * 1999-09-15 2003-08-05 Lucent Technologies Inc. Method and receiver for dynamically compensating for interference to a frequency division multiplex signal
US6711398B1 (en) * 2000-04-19 2004-03-23 Hughes Electronics Corporation Radio signal broadcast system and method
US6397061B1 (en) * 2000-06-24 2002-05-28 Motorola, Inc. Method and apparatus to reprioritize data transfer in a short range Ad Hoc network
US6718166B2 (en) * 2002-05-17 2004-04-06 Illinois Superconductor Corporation, Inc. Multiple carrier adaptive notch filter

Also Published As

Publication number Publication date
EP1339166B1 (en) 2008-06-18
US20030119450A1 (en) 2003-06-26
CN1433158A (en) 2003-07-30
TW200301626A (en) 2003-07-01
ATE398855T1 (en) 2008-07-15
EP1339166A3 (en) 2004-01-21
US6959170B2 (en) 2005-10-25
CN100440740C (en) 2008-12-03
TWI303523B (en) 2008-11-21
EP1339166A2 (en) 2003-08-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MOTOROLA MOBILITY, INC. ( N.D. GES. D. STAATES, US